diff options
Diffstat (limited to 'host/lib/usrp/dboard_eeprom.cpp')
| -rw-r--r-- | host/lib/usrp/dboard_eeprom.cpp | 107 |
1 files changed, 53 insertions, 54 deletions
diff --git a/host/lib/usrp/dboard_eeprom.cpp b/host/lib/usrp/dboard_eeprom.cpp index 54a2ea196..7775f5300 100644 --- a/host/lib/usrp/dboard_eeprom.cpp +++ b/host/lib/usrp/dboard_eeprom.cpp @@ -5,9 +5,9 @@ // SPDX-License-Identifier: GPL-3.0-or-later // +#include <uhd/exception.hpp> #include <uhd/types/byte_vector.hpp> #include <uhd/usrp/dboard_eeprom.hpp> -#include <uhd/exception.hpp> #include <uhd/utils/log.hpp> #include <boost/format.hpp> #include <boost/lexical_cast.hpp> @@ -31,97 +31,96 @@ using namespace uhd::usrp; // ... // 1f: .. negative of the sum of bytes [0x00, 0x1e] -#define DB_EEPROM_MAGIC 0x00 -#define DB_EEPROM_MAGIC_VALUE 0xDB -#define DB_EEPROM_ID_LSB 0x01 -#define DB_EEPROM_ID_MSB 0x02 -#define DB_EEPROM_REV_LSB 0x03 -#define DB_EEPROM_REV_MSB 0x04 -#define DB_EEPROM_OFFSET_0_LSB 0x05 // offset correction for ADC or DAC 0 -#define DB_EEPROM_OFFSET_0_MSB 0x06 -#define DB_EEPROM_OFFSET_1_LSB 0x07 // offset correction for ADC or DAC 1 -#define DB_EEPROM_OFFSET_1_MSB 0x08 -#define DB_EEPROM_SERIAL 0x09 -#define DB_EEPROM_SERIAL_LEN 0x09 //9 ASCII characters -#define DB_EEPROM_CHKSUM 0x1f - -#define DB_EEPROM_CLEN 0x20 // length of common portion of eeprom - -#define DB_EEPROM_CUSTOM_BASE DB_EEPROM_CLEN // first avail offset for - // daughterboard specific use +#define DB_EEPROM_MAGIC 0x00 +#define DB_EEPROM_MAGIC_VALUE 0xDB +#define DB_EEPROM_ID_LSB 0x01 +#define DB_EEPROM_ID_MSB 0x02 +#define DB_EEPROM_REV_LSB 0x03 +#define DB_EEPROM_REV_MSB 0x04 +#define DB_EEPROM_OFFSET_0_LSB 0x05 // offset correction for ADC or DAC 0 +#define DB_EEPROM_OFFSET_0_MSB 0x06 +#define DB_EEPROM_OFFSET_1_LSB 0x07 // offset correction for ADC or DAC 1 +#define DB_EEPROM_OFFSET_1_MSB 0x08 +#define DB_EEPROM_SERIAL 0x09 +#define DB_EEPROM_SERIAL_LEN 0x09 // 9 ASCII characters +#define DB_EEPROM_CHKSUM 0x1f + +#define DB_EEPROM_CLEN 0x20 // length of common portion of eeprom + +#define DB_EEPROM_CUSTOM_BASE \ + DB_EEPROM_CLEN // first avail offset for + // daughterboard specific use //////////////////////////////////////////////////////////////////////// -//negative sum of bytes excluding checksum byte -static uint8_t checksum(const byte_vector_t &bytes){ +// negative sum of bytes excluding checksum byte +static uint8_t checksum(const byte_vector_t& bytes) +{ int sum = 0; - for (size_t i = 0; i < std::min(bytes.size(), size_t(DB_EEPROM_CHKSUM)); i++){ + for (size_t i = 0; i < std::min(bytes.size(), size_t(DB_EEPROM_CHKSUM)); i++) { sum -= int(bytes.at(i)); } return uint8_t(sum); } -dboard_eeprom_t::dboard_eeprom_t(void){ - id = dboard_id_t::none(); +dboard_eeprom_t::dboard_eeprom_t(void) +{ + id = dboard_id_t::none(); serial = ""; } -void dboard_eeprom_t::load(i2c_iface &iface, uint8_t addr){ +void dboard_eeprom_t::load(i2c_iface& iface, uint8_t addr) +{ byte_vector_t bytes = iface.read_eeprom(addr, 0, DB_EEPROM_CLEN); std::ostringstream ss; - try{ + try { UHD_ASSERT_THROW(bytes.size() >= DB_EEPROM_CLEN); UHD_ASSERT_THROW(bytes[DB_EEPROM_MAGIC] == DB_EEPROM_MAGIC_VALUE); UHD_ASSERT_THROW(bytes[DB_EEPROM_CHKSUM] == checksum(bytes)); - //parse the ids - id = dboard_id_t::from_uint16(0 - | (uint16_t(bytes[DB_EEPROM_ID_LSB]) << 0) - | (uint16_t(bytes[DB_EEPROM_ID_MSB]) << 8) - ); - - //parse the serial - serial = bytes_to_string( - byte_vector_t(&bytes.at(DB_EEPROM_SERIAL), - &bytes.at(DB_EEPROM_SERIAL+DB_EEPROM_SERIAL_LEN)) - ); - - //parse the revision - const uint16_t rev_num = 0 - | (uint16_t(bytes[DB_EEPROM_REV_LSB]) << 0) - | (uint16_t(bytes[DB_EEPROM_REV_MSB]) << 8) - ; - if (rev_num != 0 and rev_num != 0xffff){ + // parse the ids + id = dboard_id_t::from_uint16(0 | (uint16_t(bytes[DB_EEPROM_ID_LSB]) << 0) + | (uint16_t(bytes[DB_EEPROM_ID_MSB]) << 8)); + + // parse the serial + serial = bytes_to_string(byte_vector_t(&bytes.at(DB_EEPROM_SERIAL), + &bytes.at(DB_EEPROM_SERIAL + DB_EEPROM_SERIAL_LEN))); + + // parse the revision + const uint16_t rev_num = 0 | (uint16_t(bytes[DB_EEPROM_REV_LSB]) << 0) + | (uint16_t(bytes[DB_EEPROM_REV_MSB]) << 8); + if (rev_num != 0 and rev_num != 0xffff) { revision = std::to_string(rev_num); } - }catch(const uhd::assertion_error &){ - id = dboard_id_t::none(); + } catch (const uhd::assertion_error&) { + id = dboard_id_t::none(); serial = ""; } } -void dboard_eeprom_t::store(i2c_iface &iface, uint8_t addr) const{ - byte_vector_t bytes(DB_EEPROM_CLEN, 0); //defaults to all zeros +void dboard_eeprom_t::store(i2c_iface& iface, uint8_t addr) const +{ + byte_vector_t bytes(DB_EEPROM_CLEN, 0); // defaults to all zeros bytes[DB_EEPROM_MAGIC] = DB_EEPROM_MAGIC_VALUE; - //load the id bytes + // load the id bytes bytes[DB_EEPROM_ID_LSB] = uint8_t(id.to_uint16() >> 0); bytes[DB_EEPROM_ID_MSB] = uint8_t(id.to_uint16() >> 8); - //load the serial bytes + // load the serial bytes byte_vector_t ser_bytes = string_to_bytes(serial, DB_EEPROM_SERIAL_LEN); std::copy(ser_bytes.begin(), ser_bytes.end(), &bytes.at(DB_EEPROM_SERIAL)); - //load the revision bytes - if (not revision.empty()){ - const uint16_t rev_num = boost::lexical_cast<uint16_t>(revision); + // load the revision bytes + if (not revision.empty()) { + const uint16_t rev_num = boost::lexical_cast<uint16_t>(revision); bytes[DB_EEPROM_REV_LSB] = uint8_t(rev_num >> 0); bytes[DB_EEPROM_REV_MSB] = uint8_t(rev_num >> 8); } - //load the checksum + // load the checksum bytes[DB_EEPROM_CHKSUM] = checksum(bytes); iface.write_eeprom(addr, 0, bytes); |